diff --git a/src/__phutil_library_map__.php b/src/__phutil_library_map__.php
--- a/src/__phutil_library_map__.php
+++ b/src/__phutil_library_map__.php
@@ -739,6 +739,7 @@
     'DiffusionRefsQueryConduitAPIMethod' => 'applications/diffusion/conduit/DiffusionRefsQueryConduitAPIMethod.php',
     'DiffusionRenameHistoryQuery' => 'applications/diffusion/query/DiffusionRenameHistoryQuery.php',
     'DiffusionRepositoryByIDRemarkupRule' => 'applications/diffusion/remarkup/DiffusionRepositoryByIDRemarkupRule.php',
+    'DiffusionRepositoryClusterManagementPanel' => 'applications/diffusion/management/DiffusionRepositoryClusterManagementPanel.php',
     'DiffusionRepositoryController' => 'applications/diffusion/controller/DiffusionRepositoryController.php',
     'DiffusionRepositoryCreateController' => 'applications/diffusion/controller/DiffusionRepositoryCreateController.php',
     'DiffusionRepositoryDatasource' => 'applications/diffusion/typeahead/DiffusionRepositoryDatasource.php',
@@ -759,6 +760,8 @@
     'DiffusionRepositoryEditSubversionController' => 'applications/diffusion/controller/DiffusionRepositoryEditSubversionController.php',
     'DiffusionRepositoryEditUpdateController' => 'applications/diffusion/controller/DiffusionRepositoryEditUpdateController.php',
     'DiffusionRepositoryListController' => 'applications/diffusion/controller/DiffusionRepositoryListController.php',
+    'DiffusionRepositoryManageController' => 'applications/diffusion/controller/DiffusionRepositoryManageController.php',
+    'DiffusionRepositoryManagementPanel' => 'applications/diffusion/management/DiffusionRepositoryManagementPanel.php',
     'DiffusionRepositoryNewController' => 'applications/diffusion/controller/DiffusionRepositoryNewController.php',
     'DiffusionRepositoryPath' => 'applications/diffusion/data/DiffusionRepositoryPath.php',
     'DiffusionRepositoryRef' => 'applications/diffusion/data/DiffusionRepositoryRef.php',
@@ -4921,6 +4924,7 @@
     'DiffusionRefsQueryConduitAPIMethod' => 'DiffusionQueryConduitAPIMethod',
     'DiffusionRenameHistoryQuery' => 'Phobject',
     'DiffusionRepositoryByIDRemarkupRule' => 'PhabricatorObjectRemarkupRule',
+    'DiffusionRepositoryClusterManagementPanel' => 'DiffusionRepositoryManagementPanel',
     'DiffusionRepositoryController' => 'DiffusionController',
     'DiffusionRepositoryCreateController' => 'DiffusionRepositoryEditController',
     'DiffusionRepositoryDatasource' => 'PhabricatorTypeaheadDatasource',
@@ -4941,6 +4945,8 @@
     'DiffusionRepositoryEditSubversionController' => 'DiffusionRepositoryEditController',
     'DiffusionRepositoryEditUpdateController' => 'DiffusionRepositoryEditController',
     'DiffusionRepositoryListController' => 'DiffusionController',
+    'DiffusionRepositoryManageController' => 'DiffusionController',
+    'DiffusionRepositoryManagementPanel' => 'Phobject',
     'DiffusionRepositoryNewController' => 'DiffusionController',
     'DiffusionRepositoryPath' => 'Phobject',
     'DiffusionRepositoryRef' => 'Phobject',
diff --git a/src/applications/diffusion/application/PhabricatorDiffusionApplication.php b/src/applications/diffusion/application/PhabricatorDiffusionApplication.php
--- a/src/applications/diffusion/application/PhabricatorDiffusionApplication.php
+++ b/src/applications/diffusion/application/PhabricatorDiffusionApplication.php
@@ -87,6 +87,8 @@
             => 'DiffusionCommitTagsController',
           'commit/(?P<commit>[a-z0-9]+)/edit/'
             => 'DiffusionCommitEditController',
+          'manage/(?:(?P<panel>[^/]+)/)?'
+            => 'DiffusionRepositoryManageController',
           'edit/' => array(
             '' => 'DiffusionRepositoryEditMainController',
             'basic/' => 'DiffusionRepositoryEditBasicController',
diff --git a/src/applications/diffusion/controller/DiffusionRepositoryManageController.php b/src/applications/diffusion/controller/DiffusionRepositoryManageController.php
new file mode 100644
--- /dev/null
+++ b/src/applications/diffusion/controller/DiffusionRepositoryManageController.php
@@ -0,0 +1,99 @@
+<?php
+
+final class DiffusionRepositoryManageController
+  extends DiffusionController {
+
+  private $navigation;
+
+  public function buildApplicationMenu() {
+    // TODO: This is messy for now; the mobile menu should be set automatically
+    // when the body content is a two-column view with navigation.
+    if ($this->navigation) {
+      return $this->navigation->getMenu();
+    }
+    return parent::buildApplicationMenu();
+  }
+
+
+  public function handleRequest(AphrontRequest $request) {
+    $response = $this->loadDiffusionContext();
+    if ($response) {
+      return $response;
+    }
+
+    $viewer = $this->getViewer();
+    $drequest = $this->getDiffusionRequest();
+    $repository = $drequest->getRepository();
+
+    $panels = DiffusionRepositoryManagementPanel::getAllPanels();
+
+    foreach ($panels as $panel) {
+      $panel
+        ->setViewer($viewer)
+        ->setRepository($repository);
+    }
+
+    $selected = $request->getURIData('panel');
+    if (!strlen($selected)) {
+      $selected = head_key($panels);
+    }
+
+    if (empty($panels[$selected])) {
+      return new Aphront404Response();
+    }
+
+    $nav = $this->renderSideNav($repository, $panels, $selected);
+    $this->navigation = $nav;
+
+    $panel = $panels[$selected];
+
+    $content = $panel->buildManagementPanelContent();
+
+    $title = array(
+      $panel->getManagementPanelLabel(),
+      $repository->getDisplayName(),
+    );
+
+    $crumbs = $this->buildApplicationCrumbs();
+    $crumbs->addTextCrumb(
+      $repository->getDisplayName(),
+      $repository->getURI());
+    $crumbs->addTextCrumb(
+      pht('Manage'),
+      $repository->getPathURI('manage/'));
+    $crumbs->addTextCrumb($panel->getManagementPanelLabel());
+
+    $view = id(new PHUITwoColumnView())
+      ->setNavigation($nav)
+      ->setMainColumn($content);
+
+    return $this->newPage()
+      ->setTitle($title)
+      ->setCrumbs($crumbs)
+      ->appendChild($view);
+  }
+
+  private function renderSideNav(
+    PhabricatorRepository $repository,
+    array $panels,
+    $selected) {
+
+    $base_uri = $repository->getPathURI('manage/');
+    $base_uri = new PhutilURI($base_uri);
+
+    $nav = id(new AphrontSideNavFilterView())
+      ->setBaseURI($base_uri);
+
+    foreach ($panels as $panel) {
+      $nav->addFilter(
+        $panel->getManagementPanelKey(),
+        $panel->getManagementPanelLabel());
+    }
+
+    $nav->selectFilter($selected);
+
+    return $nav;
+  }
+
+
+}
diff --git a/src/applications/diffusion/management/DiffusionRepositoryClusterManagementPanel.php b/src/applications/diffusion/management/DiffusionRepositoryClusterManagementPanel.php
new file mode 100644
--- /dev/null
+++ b/src/applications/diffusion/management/DiffusionRepositoryClusterManagementPanel.php
@@ -0,0 +1,20 @@
+<?php
+
+final class DiffusionRepositoryClusterManagementPanel
+  extends DiffusionRepositoryManagementPanel {
+
+  const PANELKEY = 'cluster';
+
+  public function getManagementPanelLabel() {
+    return pht('Cluster Configuration');
+  }
+
+  public function getManagementPanelOrder() {
+    return 12345;
+  }
+
+  public function buildManagementPanelContent() {
+    return pht('TODO: Cluster configuration management.');
+  }
+
+}
diff --git a/src/applications/diffusion/management/DiffusionRepositoryManagementPanel.php b/src/applications/diffusion/management/DiffusionRepositoryManagementPanel.php
new file mode 100644
--- /dev/null
+++ b/src/applications/diffusion/management/DiffusionRepositoryManagementPanel.php
@@ -0,0 +1,43 @@
+<?php
+
+abstract class DiffusionRepositoryManagementPanel
+  extends Phobject {
+
+  private $viewer;
+  private $repository;
+
+  final public function setViewer(PhabricatorUser $viewer) {
+    $this->viewer = $viewer;
+    return $this;
+  }
+
+  final public function getViewer() {
+    return $this->viewer;
+  }
+
+  final public function setRepository(PhabricatorRepository $repository) {
+    $this->repository = $repository;
+    return $this;
+  }
+
+  final public function getRepository() {
+    return $this->repository;
+  }
+
+  final public function getManagementPanelKey() {
+    return $this->getPhobjectClassConstant('PANELKEY');
+  }
+
+  abstract public function getManagementPanelLabel();
+  abstract public function getManagementPanelOrder();
+  abstract public function buildManagementPanelContent();
+
+  public static function getAllPanels() {
+    return id(new PhutilClassMapQuery())
+      ->setAncestorClass(__CLASS__)
+      ->setUniqueMethod('getManagementPanelKey')
+      ->setSortMethod('getManagementPanelOrder')
+      ->execute();
+  }
+
+}